Get post update delete Api

 workbench

/services/apexrest/Accounts/AccountService?Id=0015i00000y6vKPAAY

/**

 * @description       :

 * @author            : ChangeMeIn@UserSettingsUnder.SFDoc

 * @group             :

 * @last modified on  : 12-18-2023

 * @last modified by  : ChangeMeIn@UserSettingsUnder.SFDoc

**/

@RestResource(urlMapping='/Accounts/AccountService/*')

Global with sharing class AccountService {

    @HttpGet

    Global static Account getAccount() {

        String accountId = RestContext.request.params.get('Id');

        return [SELECT Id, Name FROM Account WHERE Id = :accountId];

    }

    @HttpPost

    Global static Account createAccount(String accName) {

        Account accObj = new Account(Name = accName);

        insert accObj;

        return accObj;

    }

    @HttpPatch

    Global static Account updateAccount(String accId, String accName) {

        Account accObjUp = [SELECT Id, Name FROM Account WHERE Id = :accId];

        accObjUp.Name = accName;

        update accObjUp;

        return accObjUp;

    }

    @HttpDelete

    Global static void deleteAccount() {

        String accId = RestContext.request.params.get('Id');

        delete [SELECT Id FROM Account WHERE Id = :accId];

    }

}